Home / 129,263.38-178,310.62-77,567.11

Finding the Fourth Proportional to 129,263.38, 178,310.62 and 77,567.11

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Solution

The fourth proportional to 129,263.38, 178,310.62 and 77,567.11 is: 106,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,263.38 : 178,310.62 = 77,567.11 : x
  2. Step 2: Convert to fraction form
    129,263.38/178,310.62 = 77,567.11/x
  3. Step 3: Cross multiply
    129,263.38x = 178,310.62 × 77,567.11
  4. Step 4: Simplify right side
    129,263.38x = 13,831,039,475.71
  5. Step 5: Solve for x
    x = 13,831,039,475.71/129,263.38
  6. Step 6: Final answer
    x = 106,998.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.